<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <script src="../react18/react.development.js"></script>
  <script src="../react18/react-dom.development.js"></script>
  <script src="../react18/babel.min.js"></script>
  <style>
    #btn {
      width: 50px;
      height: 50px;
    }
  </style>
</head>

<body>
  <button id="btn"></button>
  <div id="app"></div>
  <script type="text/babel">
    const game = [
      {id:"001",info : "Dark Soul"},
      {id:"002",info : "Blood borne"},
      {id:"003",info : "Sekiro Die:twice"},
      {id:"004",info : "Elden Ring"},
    ]
    const vDOM = (
      <ul>
        {
          game.map((item,index)=>(<li key = {item.id}>{item.info}</li>))
        }
      </ul>
    )
    const root = ReactDOM.createRoot(document.getElementById("app"))
    root.render(vDOM)

    const obtn = document.getElementById("btn")
    obtn.onclick = function (){
      game.unshift({id:Date.now(),info:"react"})
      const vDOM = (
      <ul>
        {
          game.map((item,index)=>(<li key = {item.id}>{item.info}</li>))
        }
      </ul>
      )
      root.render(vDOM)
    } 
  </script>
</body>

</html>